The phrase "a protracted one" is correct and usable in written English.
It can be used to describe something that is prolonged or extended in duration, often referring to a situation, process, or event.
Example: "The negotiations turned out to be a protracted one, lasting several months longer than anticipated."
Alternatives: "an extended one" or "a lengthy one".
CEO Todd Greenberg said the NRL integrity unit's investigation into Foran is likely to be a protracted one similar to that which looked into Parramatta's salary cap woes.
This theory led Rodenbeck to speculate that an Iraqi spring would probably have looked more like what happened in Libya: a bloody civil war, perhaps, but not such a protracted one as in Syria.
Does that point to a brief stoppage rather than a protracted one?
A senior environmental-protection official said this month that the battle against Tai Lake's algae problem would be a protracted one.
"The fear in Europe is that a recession may be a protracted one," said Holger Schmieding, chief economist for Europe at Bank of America.
The president said that the attacks showed once again that the campaign against terrorism would be a protracted one, and that his administration had a long struggle ahead.
So the battle over the PARCC contract could be a fairly protracted one, if all the parties in play pursue all of their options.
We had submitted our offer to acquire Valencia in December 2013 and did not expect that it is a long and protracted one.
He described his time behind bars as "an experience which, if not too protracted, one would not wish to have missed".
The effects may be protracted: one study reports ongoing verbal memory decline up to 9 years after left temporal surgery (Rausch et al., 2003), and two others report short-term decline followed by stabilization or recovery after 6 10 years (Alpherts et al., 2006; Andersson-Roswall et al., 2010, 2012).
Paul Collingwood became the fifth player to fly back to England last night after he was ruled out of the game, the seventh of a protracted one-day international series, due to a back spasm.
